For the B737 that I fly, our rules, which I believe are a U.K. CAA requirement, are that anything below cat1 minimas have to be an auto-land,
I think that the CAA requirement is for the simulator currency to include a certain number of hand flown approaches, if you're going to put hand flown cat 2 into your manual.
Most airlines don't want to bother with that, so just write "autoland only" into their manuals, and thus you can fly cat 2 with the same training as cat 3.